Table 1.
Medians (and IQR) for eight measures describing components of the finger skin temperature response to cold, and corresponding sensitivities, specificities and AUC (and 95% CI)
| Measure | Fingers with whiteness symptoms (Group A) | Fingers without whiteness symptoms (Group B) | Sensitivity (%) | Specificity (%) | AUC (95% CI) |
|---|---|---|---|---|---|
| Time to rise by 3°C (s) | 367 (192–508) | 116 (61–180) | 73 | 78 | 0.77 (0.71 to 0.83) |
| Time to rise by 4°C (s) | 456 (278–612) | 151 (87–202) | 77 | 79 | 0.80 (0.74 to 0.85) |
| Time to rise by 6°C (s) | 593 (224–660) | 245 (173–366) | 71 | 69 | 0.71 (0.65 to 0.76) |
| Temperature at 5 min of recovery (°C) | 18.4 (15.9–20.0) | 22.8 (20.9–25.5) | 80 | 79 | 0.81 (0.75 to 0.86) |
| Temperature at 10 min of recovery (°C) | 21.4 (19.3–23.9) | 24.9 (22.8–27.5) | 79 | 74 | 0.78 (0.72 to 0.84) |
| Rate of rewarming to 5 min of recovery (°C/min) | 0.61 (0.34–0.84) | 1.38 (1.21–1.63) | 77 | 73 | 0.75 (0.69 to 0.80) |
| Rate of rewarming to 10 min of recovery (°C/min) | 0.59 (0.37–0.83) | 0.96 (0.75–1.14) | 78 | 71 | 0.73 (0.67 to 0.78) |
| Area above the rewarming curve (°Cs) | 6996 (6221–7900) | 2895 (2069–3599) | 81 | 80 | 0.82 (0.76 to 0.87) |